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BIOLOGY EOC PRACTICE Q #1 Choice C is correct! Feedback Loops.. Positive Feedback ENHANCES a condition. For example: If polar ice melts then dark ocean water can heat up, so more polar ice melts, so ocean water heats up more, and so on…. Negative Feedback REVERSES a condition. For example: You are hot; you sweat and it cools your body.. You are hungry; you eat and you are no longer hungry… You are thirsty; your urine is dark yellow and not much in volume (your body is conserving water) BIOLOGY EOC PRACTICE Q #2 Choice C is correct!! • ATP (adenosine triphosphate) is the energy used by ALL living cells. • ATP is used by cells to do all cell processes (grow, move, repair, reproduce, etc.). • Cells obtain ATP through the process of CELLULAR RESPIRATION (when they break down glucose). CR releases CO2 and H20, but, most importantly, generates ATP. BIOLOGY EOC PRACTICE Q #3 The correct answer: CCG GUA • DNA is composed of sugar, phosphate and base. • Bases are Adenine (A), Thymine (T), Guanine (G) and Cytosine (C) • Remember the DNA base pair rules: – A with T – G with C • However, in RNA, there is no Thymine. So your RNA base pair rules are: – A with U – G with C • mRNA is produced in the nucleus during the process of transcription. BIOLOGY EOC PRACTICE Q #4 Choice A is correct!! • DNA similarities are the STRONGEST evidence for relatedness between organisms. • Other evidence includes: – Structural similarities – Similarities in embryological development – Fossil record – Similar geographical distribution BIOLOGY EOC PRACTICE Q #5 Choice D is correct!!! • Large wings (L) is dominant to small wings (l) • Yellow wings (Y) is dominant to white wings (y) • A small white winged moth (llyy) mates with a small white winged moth (llyy) • llyy x llyy can ONLY produce llyy babies. • Therefore, 100% of the offspring will be small and white winged (llyy) BIOLOGY EOC PRACTICE Q #6 Choice C is correct!! • Sustainable means to consider the environment, society and economy when making decisions. – Fossil Fuel use is not good for the environment due to the CO2 emissions. – Refrigerators manufactured in other countries requires shipping, which uses fossil fuels and results in CO2 emissions. It would be better to buy local! – Cutting trees from old growth forests is harmful to the environment (and society since we lose places of beauty and recreation)